HomeRoast Digest


Topic: Wet Grinding Coffee (11 msgs / 292 lines)
1) From: miKe mcKoffee
Bry mentioned a very interesting and thought provoking video presentation
this evening found here:http://brewtasterepeat.wordpress.com/2011/07/13/wet-grinding/ 
At first after Bry left found this linkhttp://onlinelibrary.wiley.com/doi/10.1111/j.1750-3841.2010.01822.x/abstractwhich only had the abstract to the article which prompted the video. They
wanted $708 subscription to access full article!
Just noticed below David's video presentation a link to the full article.
I'd attach it but pretty sure the List wouldn't allow the file size. You can
of course view it and save it yourself from the link below the video.
Who knows, maybe some real progress will made in our archaic grinder
technology.
Slave to the Bean  miKe mcKoffee
www.CompassCoffeeRoasting.com
URL to Rosto mods, FrankenFormer, some recipes etc:http://www.mckoffee.com/Ultimately the quest for Koffee Nirvana is a solitary path. To know I must
first not know. And in knowing know I know not. Each Personal enlightenment
found exploring the many divergent foot steps of Those who have gone before.
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2) From: Joseph Robertson
708.00 for the full article? Do they think were Attorneys, Doctors,
Scientists?
Joe
On Sun, Jul 24, 2011 at 1:48 AM, miKe mcKoffee  wrote:
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-- 
Joseph Robertson
Sasquatch Coffee Roasters
Craft Coffee Roasting by Design
joe http://www.jolindas.com(360)521-3104     PO Box 451 Stevenson,Washington 98648 USA
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3) From: Robert Yoder
Thanks, MiKe! Fascinating, indeed! Happy Roasting, robert yoder
 > From: mcKona
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4) From: sci
Ok, so I was intrigued by this video miKe posted, and I had thought of wet
grinding before. I have a Hario Skerton, so I decided to try it with
Ethiopian Harar Longberry. I put in 15g of beans, preheated 10oz. of water.
Putting the beans in the Skerton and wetting them with off boil water, I
started grinding. I had a hard time because the beans wouldn't feed (like
the video said) without an augur on the shaft. So improvising, I would
grind, and pound the whole grinder on the counter top (good thing it has
that silicon ring). That worked. I kept dribbling water on the beans and
grinding. After the beans were ground there was about 4 oz of water in the
bottom chamber with the grinds. I poured this in an AP and added 3 oz of off
boil water and let it steep 30 seconds. Press. Bam! A more flavorful cup.
Not outrageously, but noticeable. Mind, my technique was rather crude this
first time, especially with the water temp in the final extraction. I think
I'll try it in the Hario vacuum pot which would allow a nice hot extraction.
The wet grind theory has merit: keep the aromatics in the cup, not the air,
by capturing them with a wet grind. We all already know that and try to
practice it in many little ways, from grinding right before brewing, to
using extraction techniques that don't cook off the aromatics (e.g.,
percolator). Now if somebody can produce a wet grinder that is ideal for the
task, that would be nice. Skerton gets very messy, but washes up in a snap.
Ivan
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5) From: Robert Yoder
That was quick! Thanks for the report, Ivan! Please let us know about your further adventures in WetGrindLand. robert yoder 
 > Date: Mon, 25 Jul 2011 15:07:59 -0400
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6) From: Tom Ulmer
In my mind wet grinding would necessarily integrate directly to the brewing
process. I expected a bit more than was brought to fruition in this
demonstration - but maybe the idea is just born...

7) From: Edward Bourgeois
+1, This is what I've been thinking too.
On Mon, Jul 25, 2011 at 5:28 PM, Tom Ulmer  wrote:
<Snip>
-- 
Ed Bourgeois aka farmroast
Amherst MA.http://coffee-roasting.blogspot.com/Homeroast mailing list
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8) From: Robert Yoder
I thought the video touched on the brew part.  Seemed there was the implication that that was the goal of the project. But I could be wrong, Happy Roasting, robert yoder
 > Date: Tue, 26 Jul 2011 14:50:34 -0400
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9) From: sci
The extraction does begin in the grinding; there's no way to avoid it. The
water both dampens beans so they don't make as many fines, captures VOCs,
and lubricates the burrs. I had to kinda dowse the beans occasionally to get
them to feed into the burrs. In small amounts, water acts like an adhesive,
not a lubricant, so the burrs gum up.  I used hot water, but of course it
cools down drastically and doesn't do a full extraction in the grinding. The
final extraction takes place when you pour the slop/grind mix into something
else (AP or FP, maybe even vac. pot or pour over). Again, my first foray was
rather crude, but I think exploration here has merit, and the theory too.
How can we wet grind more efficiently?
BTW, someone asked about it with a Virtuoso. I have one, probably won't try
it. Problem is the huge mess and cleanup of grind chamber. Plus, that's
electrical, and it seems like I was taught not to mix water and electricity,
especially in devices not rated for that. I could be wrong.
Maybe just a plain old kitchen blender will work, then filter through Swiss
gold. Will try, what's to lose.
Ivan
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From: Robert Yoder 
To: 
Subject: Re: [Homeroast] wet grinding coffee
Message-ID: 
Content-Type: text/plain; charset="iso-8859-1"
I thought the video touched on the brew part.  Seemed there was the
implication that that was the goal of the project. But I could be wrong,
Happy Roasting, robert yoder
 > Date: Tue, 26 Jul 2011 14:50:34 -0400
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10) From: Robert Yoder
Hi, Ivan, IIRC, the presenter indicated that extraction times would be far longer, since the risk of over-extraction of fines is reduced/eliminated. I agree that preheating a blender and then using highest-reasonable temperature water might give you something, but the temperature would drop through the process.  I think that a heated blender-type device exists (Vitamix?), and that might help. Happy Experimenting, robert yoder
 > Date: Wed, 27 Jul 2011 14:45:46 -0400
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11) From: Yakster
The video I saw before vacation hinted at a new Marco Uber product, maybe
named the Bruber?
I've got a Kyocera and Aeropress on vacation, tempted to try this.
A lab wash bottle might make a good water feed, wet cutting/grinding isn't
uncommon for other materials, maybe there's synergistic products available.
Maybe the hot water pipe from espresso machine?
-Chris
Pecked out on my mobile phone.
On Jul 27, 2011 9:16 AM, "Robert Yoder"  wrote:
<Snip>
longer, since the risk of over-extraction of fines is reduced/eliminated. I
agree that preheating a blender and then using highest-reasonable
temperature water might give you something, but the temperature would drop
through the process. I think that a heated blender-type device exists
(Vitamix?), and that might help. Happy Experimenting, robert yoder
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